Yeah, real statistics must be made. However this opinion is so universal and frequently voiced by the workers that not sharing it would be just as wrong as relying purely on anecdata.
The society here is not too divided. It's normal to meet, talk and drink beer with people of other occupations. Every time someone at a bar tells me they work at a warehouse, they will soon be raving about how much better things are thanks to Amazon. You can overhear these conversations at bus stops, at the doctor, etc.
